RedRock® RR122 TMR Digital Magnetic Sensors Coto Technology RedRock® RR122 TMR Magnetic Sensors are digital magnetic sensors ideal for medical, industrial, automotive, and consumer applications. RR122-1B12-51x Sensors offer the industry's lowest average current drain (50nA) for an active magnetic sensor. Coto Technology RedRock RR122 TMR Magnetic Sensors provide an omnipolar push-pull response and a wide supply voltage range from 1.7V up to 5.5V.